Die roll



Dec. 3, 1929. c. s. ANDREWS 1,738,271

DIE ROLL Filed March 25, 1926 4 Sheets-Sheet 1 ATTORNEY v Dec. 3, 1929. c. ANDREWS 1,738,271

DIE ROLL Filed March 25, 1926 4 Sheets-Sheet 2 (9/094 1 F? i r------%%---- 106 I 106 A /A-@- 1 1 706 105 INVENTOR ATTORNEY Dec. 3, 1929.

C. S. ANDREWS DIE ROLL Filed March 25, 1926 4 Sheets-Sheet 3 INVENTOR BY W 2;. M;

ATTORNEY Dec. 3, 1929. c. s. ANDREWS 1,738,271

DIE ROLL Filed March 25, 1926 4 Sheets-Sheet 4 40 I '1 INVENTOR ATTORNEY Patented Dec. 3, 1929 UNITED STATES PATENT OFFICE.

GHAMPE S. ANDREWS, OF NORTH CHAT'IAINOOGA, TENNESSEE, ASSIGNOR. TO BOX BLANK CORPORATION, OF NEWYORK, N. Y., A CORPORATION OF DELAWARE.

DIE ROLL Application filerl March 25, 1926. Serial No. 97,165

The. invention relates to improvements in paper box making machines, and more particularly to a new mode of building up the die rolls for cuttingand creasing the paper board, whereby the mounting or positioning of the cutting and creasing knives or cleats may be easily and inexpensively changed to meet the exigencies of different jobs.

Thedie, rolls made according to the inven I tion may be used anywhere that a device for scoring and creasing paper board is desired, but they are particularly adapted to be used with paperbox making machines which have the units for performing all the necessary operations to transform the blank paper web to a finished carton arranged in a straight line, the successive.operations closely following one another.

In paper box making machines of this type the various mechanisms for efiecting the separate operations of the paper board are arranged in a straight line. Starting at one end of the line are arranged successlvely the roll of blank paper heard, one or more printing mechanisms for printing difl'erent inipressions on the paper board, die rolls for cuttingand creasing the paper board, separator rolls, if desired, for separating the cartons from one another, and some sort of de- 3 livery mechanism. It will be understood that the paper web travels through these several mechanisms successively and the several operations are performed practically simultaneously so that the interval of time taken to make. a finished carton from the blank paper board is very small. The speed with which cartons or aaper boxes can be made with machines of his type is naturally very great.

According to the invention die rolls are provided which ar adapted to have their impression elements, such scoring and cutting knives or cleats and counter cleats,mounted in such manner upon the several cylinders or plates that they may be very easily rearranged for difierent jobs. The die rolls may comprise a male or impression roll and a female or counter roll. The male roll may be made up of a blank cylinder having a smooth cylindrical surface and male scoring and cutting cleats.

The female roll may be made up of a blank cylinder having a smooth cylindrical surface and female scoring and cutting ceats co-acting with the male cleats. The cleats may be directly applied to the cylindrical surface of the respective cylinders in any desired position to cause any desired score or cut such as may be necessary to produce a given paper box. The mounting is such that the cleats may be easily and inexpensively applied to the blank cylinders. The cleats may be de mounted with equal facility, so that the same cylinder may be set up for a new job. The same blank cylinders may be used reguarly for an indefinite period of time, and likewise the same cleats may be used over and over again for a large number of different jobs.

According to the invention stock cleats may be provided of a given size and of given length. When it is desired to set up a die roll for a articular job the cleats are cut to the desire lengths. They are then suitably prepared and fitted to the blank cylinders. After the cleats are suitably prepared and fitted to the blank cylinders, they may be hardened so that the, cutting and creasing edges will stand up in service. The cleats may then be applied and secured to the blank cylinders.

Various other objects and advantages of the invention will be obvious :from the following particular description of one form of device embodying the invention or from an inspection of the accompanying drawings; and the invention also consists in certain new and novel features of construction and combinations of parts hereinafter set forth and claimed.

In the drawingsa Flg. 1 1s a plan view of the advance cutting and scoring Wheels and the die cylinders for cutting and creasing the paper board;

Fig. 2 is a front elevational view of the structure shown in Fig. 1;

Fig. 3 is a. front elevation of the male and female die cylinders showing the metal cutting and creasing cleats mounted thereon for a articular job;

liig. 4 illustrates a linear section of the paper board web after passing between the lUU cutting and scoring wheels and die rolls, the solid lines indicating the cuts and the dotted lines indicating the creases;

Fig. 5 is a projected plan of one half of the male diecylinder illustrating the manner in which the cleats are applied to a face of the cylinder to affect the paper board web as indicated in Fig. 4. The other half of the malecounter or female cutting cleat;

Fig. 10 is a cross section illustrating the counter or female creasing cleat;

. Fig. 11 is a fragmentary section of a single strip of cutting cleat and counter cleat, illustrating the co-action between them when they cut the paper board; v

Fig. 12 is a similar View showing the coaction between the male scoring cleat and counter cleat to form a crease in the paper board; and

Fig.13 is a section through cutting cleats and illustrating how a resilient material may be'used to eject the paper'board from the knives after same has been cut by them.

In the following description and in the claims parts will be identified by specific names for convenience, but they are intended to be as generic in their application to simi-' lar partsas the art will permit.

Referring now to the drawing, in Figs. 1 and 2, the part of the paper box machine which is used for cutting and creasing the paperboard maycomprise two standards 1 and2 havingbearings which may support the die rolls 3 and 4, the male or impression roll 3 being shown on top and the female or counter roll 4 on the bottom. The impression r0113 may comprise a cylinder 5 having a smooth cylindrical surface over the greater part of its length but having bearing portions 6 of larger diameter at its ends, these bearing portions contacting with similar bearing portions 7 on the counter cylinder 8 which may be similar 'to'the impression cylinder.

, Mounted also on the standards 1 and 2 may be the auxiliary cutting and creasing rolls which may comprise an upper or male roll 10 and a lower or counter roll 11, this pair of rolls being spaced slightly from the die rolls.

:It will-be understood that the blank web of paper board may be fed into the machine so that it iscut and'creased by the auxiliary rolls-before it is operated upon by the die rolls.

The upper roll 10 of the auxiliary cutting and creasing rolls may comprise a suitable cylinder 12 having a groove or keyway 13 therein, the cylinder having mounted thereon annular cutting and creasing wheels or knives which may be slid axially of the cylinder 12 to meet the exigencies of the particular job, the knives having set screws or other means for clamping in the desired position. The cutting knives 14: are shown as providing a shearing action, the knives of the upper roll overlapping the co-operating knives 5 of the lower roll. For creasing, the wheels 15 on the upper roll are shown as having annular creasing knives co-acting with annular grooves 60 on the corresponding female knives 16 of the lower roll. Itwill be understood that the knives of the lower roll 11 may be slid axially and clamped in desired positions to meet the exigencies of the particular job in the same manner as the knives of the upper roll.

Suitable gearing (not shown) may be provided for driving the auxiliary rolls and die rolls, and for co-ordinating the operation of the wheel rolls and die rolls with the rest of the machine. The system of gearing for producing this result forms no part of the present invention.

Referring to Figs. 7, 8, 9 and 10, four kinds of cleats are shown. Fig. 7 shows the male creasing cleat 19 which is mounted on the impression roll for formingthe creases. This cleat 19 comprises a comparatively heavy and wide base portion 20, on one side of which is an upstanding knife 21, the edge 22 of the knife being flat but with slightly rounded corners. One side 26 of the knife is co-extensive with a side of the base for a purpose hereinafter described. The other side 27 of the knife is made at a suitable angle, as 45, for a purpose also hereinafter described.

In Fig. 8 the male cutting cleat 23 may comprise a comparatively heavy base 24 having an upstanding knife 25 on one side thereof, the outer end of the knife forming a sharp cutting edge 39. One side 28 of the knife is co-extensive with the side of the base, and the other side 38 is arranged at a suitable angle, as for instance 37, with the first side of the knife for a purpose hereinafter described.

In'Fig. 9 the counter cutting cleat 35 is illustrated, which is simply a base of rectangular cross section, the same dimensions as the base of the male scoring and cutting cleats.

In Fig. 10 the counter scoring cleat 29 may comprise a broad flat base of generally rectangular cross section. In its upper surface a groove 30 may be provided, preferably near one side to insure room for the fastening screws 49. The groove 30 is for the purpose of allowing the knife 21 of the male creasing cleat to make the score in the paper board as will be described more in detail hereinafter.

It will be understood that these four kinds of cleats will come in suitable lengths, as for instance, ft. lengths. The angular sides 27 and 38 of the creasing and cutting knives insures that after a cut or crease is made the knife will be easily separated from the paper board. In other Words, the angular side. helps to insure a clean cut or score and easy separation. The other sides 26 and 28 of the knives are in planes at right angles to the flat bottom sides of the basis of the cleats so that, when the cleats are applied to the blank cylinder, the edges between the flat bottoms of the bases and the sides may be used as guiding edges for positioning the cleats.

The blank cylinders for both the male roll and counter roll may be substantially identical. Each may comprise a true cylindrical surface for the greater part of Its extent bounded at the ends With the enlarged cylindrical portions 6 and 7 forming bearing rings. These cylinders, as stated above, are suitably mounted between the standards 1 and 2 of the frame of the machine and are driven in any desired manner. The part of these cylinders between the end bearing rings 6 and 7, which will be hereinafter called the sight, will be suitably ruled with markings extending circularly around the cylinder, these markings being uniformly spaced, and also with markings running parallel to the axis thereof also uniformly spaced. These markings, it will be understood, aid in the laying out of the rolls and in preparing them for the mounting of the cleats for a given job.

In order to build up die rolls for a given job, the die rolls will first be laid out by marking lines for the desired cuts and creases. The male cleats 19 and 23 for the horizontal cuts and creases will be cut to the desired lengths and fitted to the cylinder. If necessary the bottom of base of the cleats may be curved slightly to conform to the curvature of the cylinder. Holes for the fits toning screws 49 will be drilled through the base of the cleats and into the cylinder.

In order to mount the male cleats for the vertical cuts and creases, the cleats will be cut to the desired lengths and then Will be bent to conform to the curvature of the cylinder. The cleats will then be fitted around the cylinder and holes drilled through the base thereof and into the cylinder to accommodate the fastening screws. Before securing the cleats to the cylinder they will be suitably hardened and tempered so that the cut- "ting edges and other parts thereof will stand up well in service. In mounting the cleats on the cylinder, shims 4.0 may be inserted be tween the cleats and the cylinder surface to insure the proper distance between the working edge of the cleats and the axis of rotation of the cylinder The male cutting cleats for the horizontal cuts are denoted by 100 while those for the vertical cuts are denoted by 101 in Fig. 5.

The male creasing cleats for the horizontal creases are denoted by 102. No creasing cleats for the vertical creases are necessary for the particular job used for purposes of illustration, all of the vertical creasing being done by the creasing wheels and 16 on the auxiliary rolls 10 and 11.

The counter cleats 29 and may be mounted on a counter cylinder in a manner similar to the male cleats 19 and 23, it being understood that the counter cleats must be placed in such position thatthey may co-act with the knives of the cutting and creasing cleats to produce the desired cuts and creases. It will be understood that the counter cleats will be fitted to the counter cylinder 8 and holes drilled for the fastening screws 19, after which the cleats will be hardened and tempered to insure long wear of the working portions.

The female or counter cutting cleats for the horizontal cuts are denoted by 110 while those for the vertical cuts are denoted by 111 in Fig. 6. The female creasing cleats for the horizontal creases are denoted by 112.

The relation of the male and counter cutting cleats 23 and 35 as they operate on the paper board to cut it is shown in Fig. 11. It will be understood that the knife on the cutting cleat must co-act with a substantial area of flat surface of the counter cleat in order to give a proper cut. At the same time it should be borne in mind that sufficient space must be left to accommodate the fastening screws 49 which hold the counter cleat to the counter cylinder to insure that they will never contact with the cutting knives.

In order to obtain a clean cut the cutting edge of the impression cutting cleat must just touch the co-acting surface of the counter cleat.

The relation of the male and counter creasing cleats 19 and 29 when they operate on the paper board to crease it is shown in Fig. 12. The cleats are arranged on the respective cylinders so that the operating surfaces thereof do not touch, but sufficient space is left be tween the knife of the male cleat 19 and the groove 30 of the counter cleat 29 to accommodate the paper board indicated by 50. This action breaks the fibers of the paper board sufiiciently to cause a crease.

The mounting of the cutting and creasing male and counter cleats for the true horizontal and vertical cuts and creases has been described. WVhen, however, a cut or crease is desired which is neither vertical nor horizon tal, the principle of the invention may still be applied. If the cut or crease is nearer the vertical than the horizontal, the cleats may be prepared as though for a true vertical cut, the angles to the vertical met in practice presenting no great difficulty to the mounting of these cleats. Male cutting cleats for making at thedesired angle. Male cutting cleats for making such cuts are indicated at 105, the female cutting cleats beingindicated at 115.

When the paper board web is cut to form a carton there are almost always small pieces of paper board formed, which form no part of the product and which are waste. If some means is not taken to eject these small pieces from the rolls they will clog up the cutting cleats and interfere with the operation of the machine. In order to prevent this from happening small elastic blocks, as rubber or cork, may be placed at the points where this is liable to occur. These rubber blocks'may be pasted or glued either to the cleats or to the surface of the cylinder at the cleat. In the web of paper board used for illustration the small pieces of paper board which must be ejected are indicated by 106 in Fig. 4.

' In Fig. 18 the elastic blocks are denoted by 41 and are shown as being secured around the male cutting cleat 23. These blocks normally extend out beyond the operating edge of the cleat. It will be easily understood that when the cleats operate on the paper board web I the resilient blocks will be merely compressed 'as illustrated and will in no way disturb the operation of the cleats. As soon as the undesired small pieces of board have been cut, the

' resilient blocks tend to return to its normal shape and will expel the troublesome small pieces of paper board, thereby obviating any danger of clogging up the machine.

It will be understood that, if desired, the die rolls may be constructed to make all the necessary cuts and creases. However, for making vertical cuts and creases which extend the entire length of the web, it is cheaper and more advantageous to use the wheel rolls. However, for vertical cuts and creases which do not extend the entire length of the web, for horizontal cuts and creases and those cuts and creases which are neither vertical nor horizontal, the die rolls should be used.

"It will be understood that practically any size of die rolls may be used to practice this invention; also any number of cartons either of the same kind or different may be cut by a .singlerevolution of the die rolls, depending of course on the size of carton and size of the roll. Since the cleats may be mountedin any position and any angle on the sight of the die cylinders any kind of carton may be cut. Furthermore, due to the construction of the die rollsaccording to the invention the cleats may be very quickly, easily and inexpensively mounted for a particular ob. The die cylinders may be used repeatedly for an almost unlimited number of jobs.

7 While I have shown and described and have pointed out in the annexed claims certain novel features of the invention, it will be understood that various omissions, substitutions and changes in the forms and details of the device illustrated and in its operation may be made by those skilled in the art without departing from the spirit of the invention.

Having thus described my invention, I claim:

1. A die device comprising a male member and a female member, male creasing cleats secured to the substantially uninterrupted surface of said male member, each male cleat including a creasing knife, female creasing cleats secured to the substantially uninterrupted surface of said female member, each female cleat having a longitudinal groove, said male and female cleats being arranged so that said knives enter said grooves to make creases in materials operated upon, said cleats being adapted to be placed in any desired position on said surface to make the desired creases.

2. In die rolls for making paper box blanks, a male roll comprising a cylinder having a substantially smooth uninterrupted cylindrical surface, cleats for cutting and creasing and made from stock having a flat band and an upstanding knife, the cleats for the vertical scores and cuts being segments of stock curved circularly to fit the cylindrical surface and having correspondingly curved knives, the cleats for the horizontal scores and cuts being segments of straight stock having an inner surface substantially fitting said cylindrical surface and straight knives, the cleats for cuts and creases neither vertical nor horizontal being either of curved or straight stock depending upon whether the cut or crease is nearer the vertical or horizontal, said cleats being of length depending on the size of the desired cut or crease, and machine screws extending through the flat bands of said cleats into said cylindrical surface for securing said cleats to said cylinder.

3. In die rolls for making paper box blanks, roll comprising a cylinder having a substantially smooth uninterrupted cylil'idrical surface, cleats for cutting and creasing and made from strip stock, the cleats for the vertical scores and cuts being segments of stock circularly curved to fit the cylindrical surface, the cleats for the horizontal scores and cuts being segments of straight stock having an inner surface substantially fitting said cylindrical surface, the cleats for cuts and creases neither vertical nor horizontal being either of curved or straight stock depending upon whether the cut or crease is nearer the vertical or horizontal, said cleats being of length depending on the size of the desired cut or crease, and machine screws extending through said cleats into said cylindrical surface for securing said cleats to said cylinder.

lid

L. A die device comprising a male member and a female member, male impression cleats secured in any desired position on the substantially smooth, uninterrupted surface of said male member, female impression cleats soured in any desired position on the substantially smooth, uninterrupted surface of said female member, said male and female cleats coacting with each other to make desired impressions.

5. Die rolls comprising a male cylinder and a female cylinder, each having a substantially smooth, uninterrupted surface, male impression cleats secured to the said surface of said male cylinder, female impression cleats secured to the said surface of said female cylinder, said cleats coacting with each other to produce the desired im pression.

6. In a die roll, a cylinder having a substantially smooth, uninterrupted cylindrical surface, cleats of flexible strip stock for making desired impressions, the cleats for vertical impressions being segments of stock curved to circular shape to fit said surface, the cleats for the horizontal impressions being segments of straight stock fitting said surface and disposed parallel to the axis of the cylinder, the cleats for impressions neither vertical nor horizontal being either of circularly curved or straight stock depending upon Whether the desired impression is nearer the vertical or the horizontal.

7. A die device comprising a male member and a female member, male cutting cleats secured to said male member, each male cleat comprising a base portion and an upstanding knife portion, female cutting cleats secured to said female member, each female cutting cleat having a flat upper surface, said male and female cleats being arranged so that said knife portion Works against said flat upper surface.

In testimony whereof I have hereunto set my hand.

CHAMPE S. ANDREWS. 

